SSH-keygen SSH加密KEY

/usr/bin/ssh-keygen -t rsa1 -b 1024 -f /etc/ssh/ssh_host_key
/usr/bin/ssh-keygen -t dsa -f /etc/ssh/ssh_host_dsa_key
/usr/bin/ssh-keygen -t rsa -f /etc/ssh/ssh_host_rsa_key